Opera 10.50 also includes a new design, as well as private browsing, where Opera hides all traces of sites you visit.

The improvements to Opera's look and feel are many. The new Opera menu button replaces the traditional menu bar, so you have a single-point to access all of Opera's groundbreaking features.

Opera 10.50 is the fastest browser the company has ever produced. Under the hood, Opera has introduced a new JavaScript engine, Carakan, and a new graphics library, Vega.

Private browsing removes specific sites from your browsing history. Opera 10.50 allows you to browse privately in a tab or in an entirely separate window.

On Windows 7/Vista, Opera enjoys Aero Glass, as well as supporting Aero Peek and Jump Lists. Now, you can easily access your Speed Dials, tabs and more from the Taskbar.

By turning on the 'Opera Turbo' feature web pages are compressed on Opera's servers. Because you transfer less data, Web content gets to you faster.

Opera Unite allows you to share content immediately, without uploading files or posting to a social network.

Opera Link synchronizes your Speed Dial, notes, search-engine preferences and more; then, just log into any other Opera Web browser or even Opera Mini, the world's most popular mobile Web browser.

Opera 10.50 also includes improved standards support for HTML5 and CSS3, giving Web designers the tools they need to make Web applications that work on completely open technologies.

Opera is available completely free from www.opera.com or via Microsoft's browser choice screen. It is currently available for Windows and comes in 42 different languages. Mac and Linux versions are coming soon, Opera said.